Bad Sector

Overview

This function displays the bad sector.

Note

  • When data for rebuild, copyback, or redundant copy is not read normally, bad sector information is recorded.

  • When a system message that indicates the detection of bad sector is displayed in the [Overview] screen, or when a "Bad data" event is notified by Host Sense Key Code Qualifier or SNMP Trap, use this function to check the detected bad sector.

    Use the [Setup Event Notification] function to specify whether to perform event notification when a bad sector is detected. Refer to the [Setup Event Notification] function for details. Note that the deletion of bad sector can be performed by a maintenance engineer who has the "Maintenance Operation" policy.

  • Deduplication/Compression Volumes are not displayed in the bad sector list.

  • A bad sector is not created for External Volumes.

User Privileges

Availability of Executions in the Default Role

Default role Availability of executions
Monitor
Admin
StorageAdmin
AccountAdmin  
SecurityAdmin
Maintainer

Refer to "User Roles and Policies" for details on the policies and roles.

Display Contents

In this screen, the bad sector information is displayed.

Volume List

Item Description

No.

The volume number is displayed.

Name

The volume name is displayed.

When the volume type is WSV or when the volume is concatenated by LUN Concatenation, "volume name (n/m)" is displayed.

n: nth volume in the concatenation order

m: number of concatenated volumes

Type

The volume type is displayed.

Standard

WSV

TPV

FTV

SDV

SDPV

Temporary

Usage

The usage of the volume is displayed.

  • Block

    The volumes that are used for the SAN.

  • File

    The volumes that are used for the NAS.

  • System

    The system volumes.

    Refer to "Usage Details" in the [Volume Detail] screen ([Basic] tab) for details.

  • Veeam

    The volumes that are used for Veeam Storage Integration.

Error LBA

The start position of the bad sector information in the volume is displayed using a Logical Block Address (LBA) (hexadecimal).

When the volume type is WSV or when the volume is concatenated by LUN Concatenation, the LBA for each volume that is concatenated (*1) is displayed.

A "-" (hyphen) is displayed when the error type is "Dispersion".

*1  :  Each volume is displayed in "volume name (n/m)" format (n: nth volume in the concatenation order, m: number of concatenated volumes). Refer to the [Volume (Basic Information)] function for details.

Error LBA Count

The number of LBAs from Error LBA of the bad sector information in the volume is displayed (hexadecimal).

When the volume type is WSV or when the volume is concatenated by LUN Concatenation, the LBA Count for each volume that is concatenated (*1) is displayed.

A "-" (hyphen) is displayed when the error type is "Dispersion".

*1  :  Each volume is displayed in "volume name (n/m)" format (n: nth volume in the concatenation order, m: number of concatenated volumes). Refer to the [Volume (Basic Information)] function for details.

Error Type

The number of bad sector information in the volume is displayed.

  • When one bad sector information exists in the volume: "Contiguity"

  • When multiple number of bad sector information exist in the volume: "Dispersion"